linux-kernel - Re: [PATCH v13 00/12] power: add power sequence library

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Message-ID: <20170517011810.GA19967@b29397-desktop>
Date:   Wed, 17 May 2017 09:18:10 +0800
From:   Peter Chen <hzpeterchen@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
CC:     Roger Quadros <rogerq@...com>, Peter Chen <peter.chen@....com>,
        <gregkh@...uxfoundation.org>, <stern@...land.harvard.edu>,
        <ulf.hansson@...aro.org>, <broonie@...nel.org>, <sre@...nel.org>,
        <robh+dt@...nel.org>, <shawnguo@...nel.org>, <rjw@...ysocki.net>,
        <dbaryshkov@...il.com>, <mark.rutland@....com>, <heiko@...ech.de>,
        <stephen.boyd@...aro.org>, <frank.li@....com>,
        <gary.bisson@...ndarydevices.com>, <festevam@...il.com>,
        <stillcompiling@...il.com>, <arnd@...db.de>,
        <vaibhav.hiremath@...aro.org>, <mka@...omium.org>,
        <devicetree@...r.kernel.org>, <mail@...iej.szmigiero.name>,
        <pawel.moll@....com>, <linux-pm@...r.kernel.org>,
        <s.hauer@...gutronix.de>, <troy.kisky@...ndarydevices.com>,
        <linux-arm-kernel@...ts.infradead.org>, <hverkuil@...all.nl>,
        <oscar@...andei.net>, <linux-usb@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <p.zabel@...gutronix.de>,
        <jun.li@....com>
Subject: Re: [PATCH v13 00/12] power: add power sequence library

On Tue, May 16, 2017 at 07:28:55PM +0200, Krzysztof Kozlowski wrote:
> On Wed, Feb 15, 2017 at 09:38:09AM +0800, Peter Chen wrote:
> > On Tue, Feb 14, 2017 at 12:21:48PM +0200, Roger Quadros wrote:
> > > Peter,
> > > 
> > > On 11/02/17 03:27, Peter Chen wrote:
> > > > Hi all,
> > > > 
> > > > This is a follow-up for my last power sequence framework patch set [1].
> > > > According to Rob Herring and Ulf Hansson's comments[2]. The kinds of
> > > > power sequence instances will be added at postcore_initcall, the match
> > > > criteria is compatible string first, if the compatible string is not
> > > > matched between dts and library, it will try to use generic power sequence.
> > > > 	 
> > > > The host driver just needs to call of_pwrseq_on/of_pwrseq_off
> > > > if only one power sequence instance is needed, for more power sequences
> > > > are used, using of_pwrseq_on_list/of_pwrseq_off_list instead (eg, USB hub driver).
> > > > 
> > > > In future, if there are special power sequence requirements, the special
> > > > power sequence library can be created.
> > > > 
> > > > This patch set is tested on i.mx6 sabresx evk using a dts change, I use
> > > > two hot-plug devices to simulate this use case, the related binding
> > > > change is updated at patch [1/6], The udoo board changes were tested
> > > > using my last power sequence patch set.[3]
> > > > 
> > > > Except for hard-wired MMC and USB devices, I find the USB ULPI PHY also
> > > > need to power on itself before it can be found by ULPI bus.
> > > 
> > > Can patches 3-7 can be sent independently of the power related patches?
> > > 
> > 
> > Yes, I had planned to submit patches 3-7 for v4.11-rc1 today first, but it
> > seems you still have comments for patch 6, let's wait a conclusion first.
> 
> Hi Peter and others,
> 
> What is the status of this patchset? I looked recently and it seemd
> not-merged. Are there any issues not dealt with?
> 
> Just to reminder, this patchset solves not only Peter's problem but few others
> as well, e.g. Odroid U3 USB hub/lan power sequence.
> 

The patches 3-7 has already at v4.12-rc1, and I will send power sequence
patch set again.

-- 

Best Regards,
Peter Chen